Search results | J. Murrey Atkins Library

Title: A Comparative Study Between Axial and Radial Flux-Focusing Magnetic Gear Topologies and Mechanical Gearboxes
Author: Calvin, Matthew
Date Created: 2015
Subjects--Topical: Mechanical engineering, Electrical engineering, Electromagnetism
Description: A variety of magnetic gear topologies have been investigated in recent years as alternatives to traditional mechanical gearboxes. In general these magnetic gears offer advantages in the non-contact transmission of torque including inherent overloa...

Title: ADDITIVE MANUFACTURABLE METASURFACES FOR RF APPLICATION
Author: Hecht, Kristy
Date Created: 2020
Subjects--Topical: Electromagnetism
Description: Materials found in nature exhibit behaviors with certain properties such as mass density, permeability, and permittivity. Unfortunately, there are limitations and restrictions to the behaviors of these materials that can be overcome with the use o...

Title: AN INVESTIGATION INTO THE PERFORMANCE OF A FLUX CONCENTRATION MAGNETIC GEARBOX AND MAGNETICALLY GEARED MOTORS
Author: Som, Debarupa
Date Created: 2020
Subjects--Topical: Electrical engineering, Electromagnetism
Description: In today’s world, renewable energy sources like wind and ocean energy have come more into prominence as a source of sustainable energy. The energy conversion devices used in these cases, utilize mechanical gearboxes to match the speed of the input...

Title: AN INVESTIGATION INTO THE TORQUE CAPABILITIES OF HIGH GEAR RATIO MAGNETIC GEARBOXES
Author: Li, Kang
Date Created: 2018
Subjects--Topical: Electrical engineering, Early childhood education, Electromagnetism
Description: Mechanical gears can be as small as those in traditional mechanical watches or as large as those in mechanical marine turbines. They can be seen in almost all transportation tools, for example, bicycles, cars, trains and airplanes. Though they hav...

Title: An Investigation Into the Torque Density Capabilities of Flux-Focusing Magnetic Gearboxes
Author: Uppalapati, Krishna Kiran
Date Created: 2015
Subjects--Topical: Electrical engineering, Power resources, Electromagnetism
Description: Wind and many rotary based ocean energy conversion devices rely on a mechanical gearbox to increase their speed so as to match the requirements of the electromagnetic generator. However, mechanical gearboxes have a number of disadvantages such as ...

Title: Application of Local Transmission Line Modelled Metasurfaces and Comparison to Huygens-Fresnel Principle Modelled Metasurfaces
Author: Trusnovic, Matthew
Date Created: 2021
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Metasurfaces have many applications, from beam steering effects to polarization control. There are two main theories that are used in the creation of modern metasurfaces, one based on the Huygens-Fresnel Principle and one based on Local Transmissi...

Title: Broadband and Reconfigurable Filtering Antennas for Next Generation Mobile Wireless Communications Systems
Author: Shehan, Joshua
Date Created: 2018
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Mobile wireless communications systems, particularly at the base station level, are ever evolving to provide more data with better coverage resulting in continuously evolving antenna technology. From first generation (1G) mobile networks deployed ...

Title: Correlation Based Electromagnetic Analysis Attack and Countermeasure
Author: Tamore, Suyash Mohan
Date Created: 2018
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Side channel analysis is a non-invasive cryptanalysis attack categorized as an implementation attack. Electronic device leak information during the data processing via covert side channels. Power consumption, electromagnetic (EM) radiations, and p...

Title: Design of a Closed Loop Wireless Power Transfer System for an Electrocorticography Device to be Implanted in the Brain of a Rat Over an Extended Period
Author: Stuemke, Jeremiah
Date Created: 2018
Subjects--Topical: Electrical engineering, Electromagnetism
Description: A biomedical power and communications system is currently under development for the purpose of continuously monitoring neural activity in ratswith epilepsy over a period of nine months. A closed loop system is employed that dynamically adjusts for...

Title: Design of a Microstrip Antenna and PCB for use in an Electrocorticography Biomedical Implant
Author: West, Jakob
Date Created: 2019
Subjects--Topical: Electrical engineering, Biomedical engineering, Electromagnetism
Description: An implantable system, that is part of a wireless body area network, is under development for a study monitoring of neural activity in rats with epilepsy. The study will continue over a nine month period to collect data for epilepsy research. This...

Title: Dynamic suspension modeling of an eddy-current device: an application to Maglev
Author: Paudel, Nirmal
Date Created: 2012
Subjects--Topical: Electrical engineering, Power resources, Electromagnetism
Description: When a magnetic source is simultaneously oscillated and translationally moved above a linear conductive passive guideway such as aluminum, eddy-currents are induced that give rise to a time-varying opposing field in the air-gap. This time-varying ...

Title: EXTERNAL WAVELENGTH STABILIZATION OF GRATING COUPLED SURFACE EMITTING LASERS AND APPLICATIONS
Author: Yilmaz, Yigit
Date Created: 2012
Subjects--Topical: Electrical engineering, Optics, Electromagnetism
Description: In this dissertation, we explore a semiconductor optical device configuration based on non-resonant diffraction grating coupler. These devices are coupled with monolithic and external wavelength selection elements to form the resonant cavity lasin...

Title: Exploiting Metamaterials: Fundamentals and Applications
Author: Karami, Morteza
Date Created: 2017
Subjects--Topical: Optics, Physics, Electromagnetism
Description: Metamaterials are man-made structures developed to engineer electromagnetic waves, and they have been studied intensely in recent decades. Although there are still debates about the performance of these types of artificial materials, many practica...

Title: FRACTAL-INSPIRED SUBWAVELENGTH GEOMETRIC INCLUSIONS FOR IMPROVEMENT OF HIGH-FREQUENCY ELECTROMAGNETIC DEVICES
Author: Smith, Kathryn
Date Created: 2018
Subjects--Topical: Electromagnetism
Description: This dissertation presents research results demonstrating the efficacy of fractal-inspired subwavelength geometric inclusions for improvement of high-frequency electromagnetic devices. It begins with a review of the open literature in the area of ...

Title: High-order integral equations for electromagnetic problems in layered media with applications in biology and solar cells
Author: Zinser, Brian
Date Created: 2016
Subjects--Topical: Mathematics, Cytology, Electromagnetism
Description: We present two distinct mathematical models where high-order integral equations are applied to electromagnetic problems. The first problem is to find the electric potential in and around ion channels and Janus particles. The second problem is to f...

Title: INFORMATION BASED SMART RF ENERGY HARVESTING IN WIRELESS SENSOR NETWORKS
Author: Tripathi, Asheesh
Date Created: 2020
Subjects--Topical: Electrical engineering, Electromagnetism
Description: A major constraint for long term sustainability of wireless sensor networks (WSN) and the Internet of Things (IoT) is the limitation of their energy resources. Most wireless sensors are low energy consuming devices which are, in general, designed ...

Title: MANAGEMENT OF OPTICAL ABSORPTION IN PLASMONIC METAMATERIALS
Author: Alisafaee, Hossein
Date Created: 2015
Subjects--Topical: Electromagnetism
Description: In this dissertation, the main focus has been on the manipulation of optical absorption. That is to either decrease the unwanted losses or increase the desired absorption for specific applications. The approaches have been chosen to provide insigh...

Title: MODELING, ANALYSIS, AND CONTROL OF A RADIAL ELECTRODYNAMIC WHEEL VEHICLE AND ANALYSIS OF AN AXIAL ELECTRODYNAMIC WHEEL
Author: Wright, Jason
Date Created: 2019
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Maglev, the concept of using magnetic forces to levitate a vehicle above a guideway for frictionless motion, has received renewed interest as of late due to several high profile projects, including the proposed next-generation transit system Hyper...

Title: Metamaterial Enhanced Broadband Dipole Antenna with Selective Directivity and Enhanced Gain
Author: Naik, Ajay
Date Created: 2018
Subjects--Topical: Electromagnetism
Description: This research is aimed at investigating the interaction between a broadband dipole andmetamaterials. Metamaterials are artificial electromagnetic structures whose electricpermittivity and magnetic permeability can be engineered to have parameter v...

Title: Metamaterial Loading of Electrically Small Patch Antennas to Enable Beam Steering up to the Horizon
Author: Pai Raikar, Vandita Rajiv
Date Created: 2015
Subjects--Topical: Electrical engineering, Electromagnetism
Description: This thesis research has been conducted with an aim of investigating the effects ofmetamaterials on microstrip patch antennas. Metamaterials exhibit interesting propertiessuch as single negative or simultaneous double negative values of relative p...